21135429

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{17657}}^1$

素因数の和:17689

約数の個数: 24

約数和(自身を含む): 36728640

約数和(自身を除く): 15593211

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 17657, 52971, 123599, 158913, 335483, 370797, 1006449, 1112391, 2348381, 3019347, 7045143, 21135429]

約数ペア:

[(1, 21135429), (3, 7045143), (7, 3019347), (9, 2348381), (19, 1112391), (21, 1006449), (57, 370797), (63, 335483), (133, 158913), (171, 123599), (399, 52971), (1197, 17657)]